// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef CONTENT_BROWSER_LOADER_LAYERED_RESOURCE_HANDLER_H_
#define CONTENT_BROWSER_LOADER_LAYERED_RESOURCE_HANDLER_H_

#include <memory>

#include "content/browser/loader/resource_handler.h"
#include "content/common/content_export.h"

namespace net {
class URLRequest;
} // namespace net

namespace content {

// A ResourceHandler that simply delegates all calls to a next handler.  This
// class is intended to be subclassed.
class CONTENT_EXPORT LayeredResourceHandler : public ResourceHandler {
public:
    LayeredResourceHandler(net::URLRequest* request,
        std::unique_ptr<ResourceHandler> next_handler);
    ~LayeredResourceHandler() override;

    // ResourceHandler implementation:
    void SetController(ResourceController* controller) override;
    bool OnRequestRedirected(const net::RedirectInfo& redirect_info,
        ResourceResponse* response,
        bool* defer) override;
    bool OnResponseStarted(ResourceResponse* response, bool* defer) override;
    bool OnWillStart(const GURL& url, bool* defer) override;
    bool OnWillRead(scoped_refptr<net::IOBuffer>* buf,
        int* buf_size,
        int min_size) override;
    bool OnReadCompleted(int bytes_read, bool* defer) override;
    void OnResponseCompleted(const net::URLRequestStatus& status,
        bool* defer) override;
    void OnDataDownloaded(int bytes_downloaded) override;

    std::unique_ptr<ResourceHandler> next_handler_;
};

} // namespace content

#endif // CONTENT_BROWSER_LOADER_LAYERED_RESOURCE_HANDLER_H_
